Luo Chen has posted comments on this change. Change subject: Add Disk Component Scan operation for primary LSM index ......................................................................
Patch Set 3: (1 comment) > (1 comment) https://asterix-gerrit.ics.uci.edu/#/c/1791/3/hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/LSMOperationType.java File hyracks-fullstack/hyracks/hyracks-storage-am-lsm-common/src/main/java/org/apache/hyracks/storage/am/lsm/common/api/LSMOperationType.java: PS3, Line 28: DISK_COMPONENT_SCAN > Why is this substantially different than search? Currently this operation is solely used by creating new secondary index. Two major differences: 1. This operation also returns deleted tuple. In other words, it does not cancel matter-tuples with anti-matter tuples, and simply return tuples from each disk component. The returned tuples are ordered on primary key first, and then the component position (i.e., the component age). 2. The return tuples have two extra fields, i.e., the component position and the anti-matter tuple flag. -- To view, visit https://asterix-gerrit.ics.uci.edu/1791 To unsubscribe, visit https://asterix-gerrit.ics.uci.edu/settings Gerrit-MessageType: comment Gerrit-Change-Id: I31b2c67c58cb0a440c1d2c26400af322e2f1c1e5 Gerrit-PatchSet: 3 Gerrit-Project: asterixdb Gerrit-Branch: master Gerrit-Owner: Luo Chen <[email protected]> Gerrit-Reviewer: Ian Maxon <[email protected]> Gerrit-Reviewer: Jenkins <[email protected]> Gerrit-Reviewer: Jianfeng Jia <[email protected]> Gerrit-Reviewer: Luo Chen <[email protected]> Gerrit-Reviewer: Till Westmann <[email protected]> Gerrit-Reviewer: Yingyi Bu <[email protected]> Gerrit-Reviewer: abdullah alamoudi <[email protected]> Gerrit-HasComments: Yes
